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Andreas93 [3]
3 years ago
15

Which of the following is true if the net force on an object is zero? (1 pt) a. The object must be at rest. b. The object’s spee

d will decrease. c. The object’s speed will increase. d. The object’s direction of motion can change, but its speed will not. e. None of the above.
Chemistry
1 answer:
prohojiy [21]3 years ago
5 0

Explanation:

the object must be at rest

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You need to use a dilute hydrochloric acid solution in an experiment. However, the only bottle of hydrochloric acid in your lab’
mr_godi [17]

The pH of the diluted HCl solution is 1.3.

Explanation:

Given:

The concentrated HCl solution of 8.0 M. The 1.5 mL of 8.0 M HCl is diluted with water to 250 mL volume.

To find:

The pH of the diluted HCl solution.

Solution

  • The concentration of the HCl solution before dilution = M_1=8.0 M
  • The volume of the HCl solution taken for dilution = V_1=1.5 ml
  • The concentration of the HCl solution after dilution =M_2=?
  • The volume of the HCl solution after dilution = V_2=250 mL

Using the Dilution equation:

M_1V_1=M_2V_2\\8.0M\times 1.5ml=M_2\times 250 mL\\M_2=\frac{8.0M\times 1.5ml}{250 mL}=0.048 M

The concentration of diluted HCl solution = 0.048 M

HCl(aq)\rightarrow H^+(aq)+Cl^-(aq)

In the 1 M solution of HCl, there are 1 M of hydrogen ion, then the concentration of hydrogen ions in 0.048 M of HCl will be:

[H^+]=1\times 0.048M=0.048 M

The pH of the diluted HCl solution :

pH=-\log [H^+]\\=-\log [0.048M]=1.18 \approx 1.3

The pH of the diluted HCl solution is 1.3.

Learn more about the dilution equation here:

brainly.com/question/24546169?referrer=searchResults

brainly.com/question/1199928?referrer=searchResults

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